Which of the following statements about f(x)=(x-4)^2-1 are true? select all that apply
Accepted Solution
A:
we have that f(x)=(x-4)^2-1 in the question and f(x)=-(x-4)^2-1 in the picture so
I'm going to analyze the two cases
using a graph tool
case 1) f(x)=(x-4)^2-1 the vertex is the point (4,-1) the x intercepts are the points (3,0) and (5,0) the y intercept is the point (0,15) the axis of symmetry is x=4 see the attached figure N 1
case 2) f(x)=-(x-4)^2-1 the vertex is the point (4,-1) there is no x intercepts the y intercept is the point (0,-17) the axis of symmetry is x=4 see the attached figure N 2
the answer considering the case N 2 is vertex (4,-1)------> is correct y intercept (0,-17)-----> is correct axis of symmetry x=4-----> is correct